The stock market on August 27, 1971
August 27, 1971, a Friday. The S&P 500 rose 0.24% to close at 100.48. Of 2,341 US stocks that traded, 1,043 rose and 820 fell.
The S&P 500+0.24%closed at 100.48
How big a move#17,997of 24,799 trading days since 1928
$100 in the index since$7,667price only, to September 24, 2026
Stocks that rose1,043of 2,341; 820 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Quantum Chemical (CUE) | +4.9% |
| Pe Corp-Pe Biosy (PEB) | +4.8% |
| GenCorp (GY) | +4.3% |
Biggest falls among the 500 largest companies
| Freeport-McMoran (FTX) | -5.2% |
| Mcdermott Intl Inc (MDRIQ) | -3.9% |
| Fedders Corp (FJCC) | -3.9% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 26, 1971 · Every August 27 · August 30, 1971 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.